On the morning of Saturday 17 July, eleven members of North Shore AREC traveled to Greenhithe equipped with AREC 477 MHz PRS radios and 2 metre amateur equipment to run some tests.
A base was set up at the Community Hall equipped with a 5-watt PRS base station and a 2 metre VHF radio operating on the Waitakere 146.70 MHz repeater for coordination and backup. The base station PRS radio used a whip antenna within the building to provide a worst-case scenario for the test.
Handheld radios used in the field were Motorola GP328 units with a nominal output of 4 watts. The base station was a Tait TM8115 with 5-watts output.
AREC members formed 4 mobile teams each with a driver and navigator/operator and spread out around the area to test comms.
A total of 88 points were chosen throughout the Greenhithe area, and each team was allocated their own list of points to test.
At each designated point, the teams contacted base and exchanged reports specifying the signal quality in each direction.
Signal reports at each location were tabulated and subsequently compared with the computer predictions.